The
signal at 0.809, 1.255 and 1.74 is due to presence of ‘CH’ group and signal at 1.85 due to –CH
2group. The ‘HNMR
showed shift at 0.830, 0.688, 0.994, 0.905 attribute the –CH
3groups. The presence of Olean skeleton was confirmed
in the
13
C-NMR spectrum with the signals in the region δ11.46-38.31ppm at 26 and at 23.77 attributed to seven
methyl groups and absence of double bond at the position of C-12, C-13.